The phrase "almost every challenge" is correct and usable in written English.
It can be used when discussing a majority of challenges or difficulties encountered in a particular context, indicating that only a few exceptions exist.
Example: "In my experience, almost every challenge can be overcome with the right mindset and resources."
Alternatives: "nearly every obstacle" or "most challenges".
Facing Mynn presented almost every challenge.
Dr. Davis was meticulous, Dr. Lande said, willing to tackle almost every challenge from other physicists.
The writer Walter Kirn recalled that at Princeton he learned to "rise to almost every challenge... except, perhaps, the challenge of real self-knowledge".
It uses this information to challenge voters at the polls, and though almost every challenge is baseless, the arguments and delays frustrate those in line and reduce turnout.
It is certainly true that strong economic growth helps solve almost every challenge the country faces: the deficit, unemployment, the income slump, even the rise of China.
The LPO and the London Philharmonic Chorus rose to almost every challenge, and the luxury quartet of Christine Brewer, Mihoko Fujimura, Toby Spence and Franz-Josef Selig ensured a white hot performance of the Te Deum.
His administration mishandled almost every major challenge it has been confronted with in the region, with the exception of contributing to the end of Gaddafi's annihilationist campaign.
His varied and prolific output as a novelist has confronted with panache and audacity almost every significant challenge in the literary and social life of his place and time.
"Co-ops can address almost every economic challenge we have," Nembhard said.
This provocative book tosses military-history hand grenades on almost every page, challenging just about every generally held notion about World War II.
The Tea Party lost almost every important primary challenge (with the notable exception of Eric Cantor's takedown), and they lost a huge amount of power within the corridors of Capitol Hill as well.
